ZLT-JL1. For checking the protection against ingress of water to prove the degrees of protection with the second characteristic numerals 3 “Protected against Spraying Water” and 4 “Protected against S...

ZLT-GC1, to determine the adherence and the durability of protective coverings on printed circuit board and of insulating layers on accessible hazardous parts or metal parts，according to IEC60950 figu...